<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .course{
            width: 160px;
            border-left: 1px solid #36D2BC;
            border-radius: 4px;
            transition: transform .5s cubic-bezier(0.075, 0.82, 0.165, 1);
            /* overflow: hidden; */
        }
        .course .content{
            height: 106px;
            border-radius: 4px;
            border: 1px solid #fff;
            border-left: 2px solid #36D2BC;
            background-color: #EFFDFB;
            /* transition: border-left-width .5s cubic-bezier(0.075, 0.82, 0.165, 1); */
        }
        .course:hover{
            transform: rotate(5deg) translateZ(0);
        }
        .course:hover .content{
            border-color: #36D2BC;
            border-left-width: 5px;
        }
    </style>
</head>
<body>
    <div class="course">
        <div class="content">

        </div>
    </div>
</body>
</html>